Episode 5

Trisha is helping Rankin, an elderly biology teacher, with various odd-jobs in the lab during lunch breaks. Judy comes to see her in the lab one day when Rankin is away. Trisha decides to show off to Judy by taking a hamster out of its cage. The hamster escapes. Another teacher, Miss Clarke, appears. Although she does not notice the absent hamster she gives Trisha a detention for wearing earrings. It seems the hamster has escaped outdoors. Judy runs to a petshop in an effort to buy a replacement hamster. It costs £1.25. Judy makes it back to the biology lab just before Rankin arrives. He notices the difference immediately. The original hamster comes back also and Rankin says that

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